2605994920 has 32 divisors (see below), whose sum is σ = 5898614400. Its totient is φ = 1036153408.

The previous prime is 2605994903. The next prime is 2605994927. The reversal of 2605994920 is 294995062.

It is not an unprimeable number, because it can be changed into a prime (2605994927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188380 + ... + 201739.

It is an arithmetic number, because the mean of its divisors is an integer number (184331700).

Almost surely, 2^2605994920 is an apocalyptic number.

2605994920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605994920 is an abundant number, since it is smaller than the sum of its proper divisors (3292619480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605994920 is a wasteful number, since it uses less digits than its factorization.

2605994920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390297 (or 390293 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 2605994920 is about 51048.9463162561. The cubic root of 2605994920 is about 1376.1249055647.

The spelling of 2605994920 in words is "two billion, six hundred five million, nine hundred ninety-four thousand, nine hundred twenty".